CN106444621A - Control method of PLC (programmable logic controller) based heat pump and cleaning machine centralized control system - Google Patents
Control method of PLC (programmable logic controller) based heat pump and cleaning machine centralized control system Download PDFInfo
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- CN106444621A CN106444621A CN201611169750.7A CN201611169750A CN106444621A CN 106444621 A CN106444621 A CN 106444621A CN 201611169750 A CN201611169750 A CN 201611169750A CN 106444621 A CN106444621 A CN 106444621A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
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Abstract
The invention provides a PLC (programmable logic controller) based heat pump and cleaning machine centralized control system and a control method thereof. A heat pump system and a cleaning machine system are combined together through a PLC module through a temperature sensor and a liquid level sensor arranged in a water tank, the PLC module monitors the running status of heat pump units and the cleaning machine system in real time, different heat pump units and auxiliary heaters are controlled to start and stop through the PLC module, the energy-saving advantage of the control system is fully reflected, information exchange and centralized control between the two systems can be managed effectively in time, and more convenience is brought to management and working efficiency is improved by data analysis; a GPRS (general packet radio service) modem of an industrial remote communication module is connected with the PLC module and an Internet-of-Things remote monitoring terminal, the remote monitoring terminal can monitor working condition of field equipment in real time through the GPRS network and the internet, and all functions of a local touch screen are realized.
Description
Technical field
The invention belongs to automation field, specifically it is based on PLC in heat pump and cleaning machine centralized control system
Control method.
Background technology
At present, either manufacturing or in the manufacture process of bearing in machinery equipment, all have one impassable
Operation, both to part assembling before cleaning, due to various mechanical parts processed after, its part itself produce some dirts
Thing can be used it is necessary to clean up；Existing cleaning way is high-temperature-hot-water cleaning, the height that heat pump is produced
Warm water passes through to draw water to be pumped in cleaning machine, then is carried out work to part, but this method has a lot of shortcomings,
First, during cleaning, each independent operating is it is impossible to enough interact, any for heat pump heating system and cleaning machine system
One system malfunctions, is required to manually be controlled, automaticity is not high；Second, operator is for heat pump
Temperature cannot obtain real-time temperature value, if heat pump cisco unity malfunction, breaks down, and causes water temperature not reach technique
Require, impact will be produced on cleaning product quality；Third, cleaning machine cleaning volume of production can become with economic situation difference
Change, therefore productive temp also can be accordingly different, and heat pump leads to sometimes can not with the respective independent control of cleaning machine system
Meet production heat demand, cause technological temperature not up to standard, affect product quality；Fourth, user can be produced because of production
Line adjusts, resettlement, and restructuring thus results in equipment control, asset management a large amount of manual time counted, management；Fifth, cleaning
Production line is not high due to automaticity, produce power consumption can according to the profile of different operating workman, custom and different, therefore
Cause unnecessary use can waste；Sixth, the water acid-base value in pond is in fact critically important, if acidity-basicity ph value is too low, corrosion
Property is larger, can cause corrosive pipeline, also can corrode during cleaning part, if acid-base value PH is too high, not wash clean during cleaning part, accessory
On greasy dirt do not wash clean, not up to standard etc.；And, with the expansion of scope of the enterprise, the reduction of production line maintenance cost is further urgent
Cut, only on the basis of existing industry tele-control system equipment with devices interconnect, realize maintenance of equipment personnel, production scheduling
The interconnection of personnel and industry control network, interaction, could more effectively reduce production line maintenance cost, reduce fault time, expand stream
Thread management and safeguard Spatial Dimension, lifts process industry automatization level further, improves industrial tele-control system and runs effect
Rate.
Content of the invention
In order to solve the above problems, the present invention provide a kind of based on PLC in heat pump and cleaning machine centralized control system
Heat pump and cleaning machine system are passed through by control method by the temperature sensor and liquid level sensor being arranged in pond
PLC module is combined, and the running status of PLC module monitor in real time source pump and cleaning machine system, by PLC module control
The startup of the different source pump of system and auxiliary heater and stopping, fully demonstrating the power savings advantages of control system, for two are
The information interaction of system and centralized Control can timely and effectively manage, can convenient management and lifting by analytical data
Work efficiency.
Technical scheme of the present invention：Based on controlling party in heat pump and cleaning machine centralized control system for the PLC
Method, described centralized control system includes heat pump, automatic control system and cleaning machine；Described heat pump includes two groups of heat pumps
Unit, pond, and small pump；Described two groups of source pump are first group of source pump and second group of source pump；Described automatic
Control system includes switch and the touch screen being connected with switch, PLC module, described PLC module and industrial telecommunication
Module connects, and described switch is also associated with host computer；Described cleaning machine is joined directly together logical, cleaning machine with the hot water outlet in pond
With suction pump is provided with the connecting pipe of pond hot water outlet, be additionally provided with hot water in independent water feeder in described pond and add
The auxiliary heater of heat, described PLC module, by being connected to the photoswitch of counting module, obtains cleaning machine cleaning workpiece
Quantity, through PLC internal processes computing, calculates Real time Efficiency, observable index, and transfers data to described touch screen；Institute
The PLC module stated connects acid-base concentration meter, described acid-base concentration meter and the soda acid being arranged at the hot water inlet of pond by serial ports
Degree sensor connects, and acid-base concentration meter obtains the pH value of heat pump hot-water system, and transfers signals to PLC module；Described concentration
Control method includes temperature-controlled process and liquid level controlling method, described temperature-controlled process, liquid level controlling method and acid-base value
Control method is carried out simultaneously；
Temperature-controlled process comprises the following steps：
Step one, temperature set：The required water temperature range of cleaning machine work is set on touch screen operation interface；
Step 2, temperature detection：Temperature sensor detects to the water temperature in pond, obtains the real-time temperature of heat pump hot-water system
Degree；
Step 3, signal amplify：Temperature transmitter temperature detection signal is amplified after again through Analog input mModule process after
It is sent to PLC module；
Step 4, temperature compare：PLC module receives temperature detection signal, and the water temperature setting value required with cleaning machine work is entered
Row compares；
Step 5, action：When PLC module judges that temperature is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit works simultaneously, and the hot water in pond is heated；When PLC module judges temperature between minimum and maximum setting value
When, PLC module sends signal and controls second group of source pump to quit work, and first group of source pump works on, in pond
Hot water carry out Heat preservation, simultaneously PLC module send signal control cleaning machine start working, and simultaneously start PLC module in
The counting module in portion counts to the workpiece being cleaned；When PLC module judges that temperature reaches maximum set value, PLC module
Send signal controls two groups of source pump to quit work simultaneously；Temperature sensor detects to the water temperature in pond all the time, with
The continuous operation of cleaning machine, the water temperature in pond constantly reduces, when PLC module judge temperature minimum and maximum setting value it
Between when, repeat above-mentioned Heat preservation step；
Liquid level controlling method comprises the following steps：
Step one, level set：Work required liquid level scope in pond is set on touch screen operation interface；
Step 2, temperature detection：Liquid level sensor detects to the liquid level in pond, obtains just to become with the height of water level in pond
The water level signal of ratio；
Step 3, signal amplify：Fluid level transmitter by Level Detection signal amplification after again through Analog input mModule process after
It is sent to PLC module；
Step 4, liquid level compare：PLC module receives Level Detection signal, with the level set value needed for the normal work of pond
It is compared；
Step 5, action：When PLC module judges that liquid level is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit and cleaning machine quit work, and the small pump being directly connected to pond carries out water-retention to pond；When PLC module judges that liquid level exists
When between minimum and maximum setting value, PLC module sends signal and controls two groups of source pump and cleaning machine to restart work, with
The small pump that pond is directly connected to proceeds water-retention to pond；When PLC module judges that liquid level reaches maximum set value, PLC
Module sends signal and controls small pump to quit work；Liquid level sensor detects to the liquid level in pond all the time；With cleaning
The operation of machine, the liquid level in pond constantly reduces, and when PLC module judges that liquid level is less than minimum setting value, repeats above-mentioned water-retention
Step；The described level set value needing to set on the touchscreen should be set according to specific works situation with those skilled in the art
Fixed；
Acid-base value control method comprises the following steps：
Step one, acid-base value set：Work required acid-base value working range in pond is set on touch screen operation interface；
Step 2, acid-base value detection：The soda acid to source pump in pond and the porch of pond junction for the acidity-basicity sensor
Degree is detected, obtains the acid-base value signal entering the hot water in pond；
Step 3, signal transmission：Acid-base value signal is sent to acid-base concentration meter by acidity-basicity sensor, and acid-base concentration meter will be believed again
Number it is sent to PLC module；
Step 4, acid-base value compare：PLC module receives acid-base value detection signal, with the acid-base value needed for the normal work of pond
Signal setting value is compared；
Step 5, action：When PLC module judges that acid-base value is less than minimum setting value or is more than maximum set value, PLC module
Sending signal controls two groups of source pump and cleaning machine to quit work, and the display lamp on acid-base concentration meter sends alarm signal, and
Show failure alarm signal on the touchscreen；When PLC module judges that acid-base value is between minimum and maximum setting value, PLC mould
Block sends signal and controls two groups of source pump and cleaning machine to restart work；Acid-base concentration meter is all the time to the acid-base value in pond
Detected；
In the present invention, in described temperature-controlled process step 5 cleaning machine work during, when PLC module judges that water temperature is low
When setting value, send signal and control cleaning machine to quit work, the auxiliary heater starting in pond enters to the hot water in pond
Row heating；When PLC module judges that heat pump breaks down, send signal and control cleaning machine and two groups of source pump to stop work
Make, and show failure alarm signal on the touchscreen, the auxiliary heater simultaneously starting in pond is carried out to the hot water in pond
Heating；When PLC module judges that temperature is between minimum and maximum setting value, PLC module sends signal and controls cleaning machine weight
Newly start working；
In the present invention, in described temperature-controlled process, step 5 cleaning machine, during work, is arranged on cleaning machine porch
Photoswitch obtain the quantity of cleaning machine cleaning workpiece, and transmit a signal to PLC module and touch screen, when PLC module exists
Do not receive the signal of photoswitch transmission in certain time, send control signal and control heat pump and cleaning machine to stop work
Make；Described certain time can directly be arranged on touch screen operation interface, and touch screen transmits a signal to PLC module again；
In the present invention, the water needed for cleaning machine work that in described temperature-controlled process, step one sets on touch screen operation interface
Warm scope is 50-90 degree Celsius；
In the present invention, described cleaning motor spindle is provided with a cistern, and described cistern is connected with pond, in cistern
Hot water reenters pond after physics sedimentation and physical filtering；
In the present invention, described centralized Control method also includes Internet of Things long-range control method, described Internet of Things long-range control method
Comprise the following steps：
Step one：Ready SIM is encased in industrial remote communication module, then will be electric in industrial remote communication module；
Step 2：The GPRS modem of industrial remote communication module is connected with PLC module by RS232 serial ports；
Step 3：The GPRS modem of Internet of Things remote monitoring terminal and industrial remote communication module pass through GPRS network with
And internet communication connects；
In the present invention, described industry remote communication module is H7710 technical grade GPRS/CDMA DTU；
In the present invention, described Internet of Things remote monitoring terminal is local computing or long-range high in the clouds computer.
Beneficial effects of the present invention:
Heat pump and cleaning machine system are passed through by PLC module by the temperature sensor and liquid level sensor being arranged in pond
Combine, the running status of PLC module monitor in real time source pump and cleaning machine system, controlled by PLC module different
The startup of source pump and auxiliary heater and stopping, fully demonstrating the power savings advantages of control system, between two systems
Information exchange and centralized Control can timely and effectively manage, can convenient management and lifting work effect by analytical data
Rate；
1. PLC module, by being connected to the temperature sensor of temperature interface module, obtains the real time temperature of heat pump hot-water system,
Send touch screen to, and show real time temperature on the touchscreen, operator can grasp the real time temperature of heat pump hot-water system in real time；
2. PLC module, by being connected to the photoswitch of counting module, obtains the quantity that cleaning machine cleans part, in PLC
Portion's sequential operation, calculates Real time Efficiency, observable index, and transfers data to described touch screen；Described photoswitch setting
Above cleaning machine porch；When PLC control module does not receive the signal of photoswitch transmission within a certain period of time, send control
Signal processed controls source pump and cleaning machine to quit work, and scientifically arrange production time and rhythm are produced into reducing
This purpose；
3. it is provided with temperature transmitter, after temperature detection signal is amplified again between temperature sensor and PLC temperature interface module
It is transferred to PLC module after the conversion process of Analog input mModule, so that water temperature is detected more accurate, by this area skill
The test of art personnel, water temperature error is within ± 0.5 DEG C；
4., when PLC module judges that temperature is less than minimum setting value, PLC module sends signal and controls two groups of source pump simultaneously
Work, heats to the hot water in pond；When PLC module judges that temperature is between minimum and maximum setting value, PLC module is sent out
Going out signal controls wherein one source pump to quit work, and another source pump works on, and the hot water in pond is carried out
Heat preservation, PLC module sends signal and controls cleaning machine to start working, and starts the counting module pair within PLC module simultaneously
The workpiece being cleaned is counted；When PLC module judges that temperature is more than maximum set value, PLC module sends signal and controls
Two groups of source pump quit work simultaneously；PLC module pass through the real time temperature that detects control varying number source pump and
Auxiliary heater heats to hot water, while meeting cleaning machine temperature required hot water, energy energy saving, reduces and produces into
This；
5., when PLC module judges that source pump breaks down, send signal and control cleaning machine and source pump to quit work,
And the auxiliary heater starting in pond heats to the hot water in pond simultaneously, the waste at water source can not only be prevented, more can
Prevent the damage that underproof hot water causes to the part being cleaned；
6. the GPRS modem of industrial remote communication module is connected with PLC module and Internet of Things remote monitoring terminal respectively
Connect, the monitor in real time to field device operation situation for the remote monitoring terminal be can achieve by GPRS network and the Internet, real
Now the institute of local touch screen is functional, more can be connect by long-range high in the clouds computer direct and carry out debugging maintenance to field apparatus, need not
Go on business scene, after networking whenever and wherever possible, you can complete most of maintenance work at the scene, greatly reduce the manpower of enterprise
Cost, for whole industrial chain, industrial big data is even more the most important thing, and the multiple stage centralized control system at scene can form
One whole system, can understand every centralized control system information in detail, find in time and system is assessed automatically, to client,
Workshop, attendant is to have good help；
7. purge chamber bottom is provided with cistern, and the hot water in cistern flows directly into water after physics sedimentation and physical filtering
Pond recycles, and increased the utilization rate of the energy, has saved water source, reduces production cost；
8. the host computer in centralized control system has data storage function, for user because producing adjustment resettlement, recombinant production
Line carries out data storage, thus reduce fixed assets labor management making an inventory difficulty, reduces cost of labor；
9. acid-base value signal is sent to acid-base concentration meter by acidity-basicity sensor, and acid-base concentration meter passes the signal to PLC mould again
Block, PLC module receives acid-base value detection signal, is compared with the acid-base value signal setting value needed for the normal work of pond；
If when PLC module judges that acid-base value is less than minimum setting value or is more than maximum set value, PLC module sends signal control
Two groups of source pump and cleaning machine quit work, and the display lamp on acid-base concentration meter sends alarm signal, and shows on the touchscreen
Show failure alarm signal, after seeing signal, the acid-base value of hot water in balancing tank, when PLC module judges for field personnel
When acid-base value is between minimum and maximum setting value, PLC module sends signal and controls two groups of source pump and cleaning machine again to open
Beginning work；
10. the present invention is simple to operate, high degree of automation, and field personnel can be familiar with operational approach quickly.
Brief description
Fig. 1 is the overall structure figure of the present invention；
Fig. 2 is the overall structure figure of cleaning machine in the present invention；
In figure labelling：1st, switch, 2, touch screen, 3, PLC module, 4, intelligent electric meter, 5, liquid level sensor, 501, level transmitting
Device, 6, temperature sensor, 601, temperature transmitter, 7, pond, 8, small pump, 9, first group of source pump, 10, second group of heat pump
Unit, 11, cleaning machine, 12, auxiliary heater, 13, Analog input mModule, 14, photoswitch, 15, host computer, 16, soda acid
Densitometer, 17, acidity-basicity sensor.
Specific embodiment
With reference to embodiments the principle and feature of the present invention is described in detail, illustrated embodiment is only used for description originally
Invention, is not intended to limit the scope of the present invention.
Based on control method in heat pump and cleaning machine centralized control system for the PLC, described centralized control system includes heat
Pumping system, automatic control system and cleaning machine 11；Described heat pump includes two groups of source pump, pond 7, and small pump 8；Institute
Stating two groups of source pump is first group of source pump 9 and second group of source pump 10, and those skilled in the art are being embodied as this
During invention, can select to need how many source pump of group and the heat pump quantity of every group of source pump according to specific works situation；Institute
State automatic control system and include switch 1 and the touch screen 2 being connected with switch, PLC module 3, described switch is also connected with
There is host computer 15；Described cleaning machine 11 is joined directly together logical, the company of cleaning machine 11 and pond hot water outlet with the hot water outlet in pond
Suction pump is provided with adapter road, in described pond, is additionally provided with the auxiliary heater 12 of hot water heating in independent water feeder,
Described PLC module, by being connected to the photoswitch 14 of counting module, obtains the quantity of cleaning machine cleaning workpiece, sends institute to
The touch screen stated；Described PLC module 3 by RS485 serial ports connect acid-base concentration meter, described acid-base concentration meter 16 be arranged on
Acidity-basicity sensor 17 at the hot water inlet of pond connects, and acid-base concentration meter obtains the pH value of heat pump hot-water system, and by signal
It is transferred to PLC module；In the present embodiment, every machine all can install GPRS locating module, and on host computer, energy real-time tracking is every
The resettlement situation of platform equipment；Described centralized Control method includes temperature-controlled process and liquid level controlling method, described temperature control
Method, liquid level controlling method and acid-base value control method are carried out simultaneously,
Temperature-controlled process comprises the following steps：
Step one, temperature set：Water temperature range needed for cleaning machine 11 works is set on touch screen 2 operation interface；
Step 2, temperature detection：Temperature sensor 6 detects to the water temperature in pond, obtains the real-time of heat pump hot-water system
Temperature；
Step 3, signal amplify：Temperature transmitter 601 temperature detection signal is amplified after again at Analog input mModule 13
It is sent to PLC module 3 after reason；
Step 4, temperature compare：PLC module 3 receives temperature detection signal, and the water temperature setting value required with cleaning machine work is entered
Row compares；
Step 5, action：When PLC module judges that temperature is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit works simultaneously, and the hot water in pond is heated；When PLC module judges temperature between minimum and maximum setting value
When, PLC module sends signal and controls second group of source pump 10 to quit work, and first group of source pump 9 works on, to pond
Hot water in 7 carries out Heat preservation, and PLC module sends signal control cleaning machine 11 and starts working simultaneously, and starts PLC mould simultaneously
Counting module within block 3 counts to the workpiece being cleaned；When PLC module judges that temperature reaches maximum set value,
PLC module sends signal and controls two groups of source pump to quit work simultaneously；Temperature sensor 6 is carried out to the water temperature in pond all the time
Detection, with the continuous operation of cleaning machine, the water temperature in pond constantly reduces, when PLC module judges temperature minimum and maximum
When between setting value, repeat above-mentioned Heat preservation step,
Liquid level controlling method comprises the following steps：
Step one, level set：Work required liquid level scope in pond is set on touch screen 2 operation interface；
Step 2, level monitoring：Liquid level sensor 5 detects to the liquid level in pond 7, obtains to become with the height of water level in pond
The water level signal of direct ratio；
Step 3, signal amplify：Fluid level transmitter 501 by Level Detection signal amplification after again at Analog input mModule 13
It is sent to PLC module 3 after reason；
Step 4, liquid level compare：PLC module 3 receives Level Detection signal, with the level set value needed for the normal work of pond
It is compared；
Step 5, action：When PLC module judges that liquid level is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit and cleaning machine 13 quit work, and the small pump 8 being directly connected to pond 7 carries out water-retention to pond；When PLC module judges liquid
When position is between minimum and maximum setting value, PLC module sends signal and controls two groups of source pump and cleaning machine 11 to restart
Work, the small pump 8 being directly connected to pond proceeds water-retention to pond；When PLC module judges that liquid level reaches maximum setting
During value, PLC module sends signal and controls small pump to quit work；Liquid level sensor 5 detects to the liquid level in pond all the time；
With the operation of cleaning machine, the liquid level in pond constantly reduces, and when PLC module judges that liquid level is less than minimum setting value, repeats
Above-mentioned water-retention step；The described level set value needing to set on the touchscreen should be with those skilled in the art according to specific works
Situation sets；
Acid-base value control method comprises the following steps：
Step one, acid-base value set：The required acid-base value working range of pond work, work are set on touch screen 2 operation interface
Make personnel and add a certain amount of abluent toward in pond, the species of added abluent and the amount adding should be with art technology herein
Personnel are determined according to the part being cleaned；
Step 2, acid-base value detection：The soda acid to source pump in pond 7 and the porch of pond junction for the acidity-basicity sensor
Degree is detected, obtains the acid-base value signal entering the hot water in pond；
Step 3, signal transmission：Acid-base value signal is sent to acid-base concentration meter by acidity-basicity sensor, and acid-base concentration meter will be believed again
Number it is sent to PLC module；
Step 4, acid-base value compare：PLC module 3 receives acid-base value detection signal, with the acid-base value needed for the normal work of pond
Signal setting value is compared；
Step 5, action：When PLC module judges that acid-base value is less than minimum setting value or is more than maximum set value, PLC module
Sending signal controls two groups of source pump and cleaning machine 11 to quit work, and the display lamp on acid-base concentration meter sends alarm signal,
And show failure alarm signal on the touchscreen, after field personnel sees alarm signal, according to specific works situation, to water
In pond, the PH of hot water is adjusted；When PLC module judges that acid-base value is between minimum and maximum setting value, PLC module sends
Signal controls two groups of source pump and cleaning machine 11 to restart work；Acid-base concentration meter is carried out to the acid-base value in pond all the time
Detection；
In the present invention, in described temperature-controlled process step 5 cleaning machine 11 work during, when PLC module 3 judges water
When temperature is less than setting value, sends signal and control cleaning machine to quit work, the auxiliary heater 12 in startup pond is in pond 7
Hot water is heated；When PLC module judges that heat pump breaks down, send signal and control cleaning machine 11 and two groups of heat pump machines
Group quits work, and shows failure alarm signal on the touchscreen, and the auxiliary heater 12 in startup pond is in pond 7 simultaneously
Hot water heated；When PLC module judges that temperature is between minimum and maximum setting value, PLC module sends signal control
Cleaning machine 11 processed restarts work；
In the present invention, in described temperature-controlled process, step 5 cleaning machine 11, during work, is arranged on cleaning machine entrance
The photoswitch at place obtains the quantity of cleaning machine cleaning workpiece, and transmits a signal to PLC module 3 and touch screen 2, when PLC mould
Block does not receive the signal of photoswitch transmission within a certain period of time, sends control signal and controls heat pump and cleaning machine to stop
Work；Described certain time can directly be arranged on touch screen operation interface, and touch screen transmits a signal to PLC module again；
Preferably, the cleaning machine 11 that in described temperature-controlled process, step one sets in touch screen 2 operation interface works required
Water temperature range is 50-90 degree Celsius；
Preferably, described cleaning motor spindle is provided with a cistern, and described cistern is connected with pond, the heat in cistern
Water reenters pond after physics sedimentation and physical filtering；
Optimize this programme further, described centralized Control method also includes Internet of Things long-range control method, and described Internet of Things is long-range
Control method comprises the following steps：
Step one：Ready SIM is encased in industrial remote communication module, then will be electric in industrial remote communication module；
Step 2：The GPRS modem of industrial remote communication module is connected with PLC module by RS232 serial ports；
Step 3：The GPRS modem of Internet of Things remote monitoring terminal and industrial remote communication module pass through GPRS network with
And internet communication connects；
Preferably, described industry remote communication module is H7710 technical grade GPRS/CDMA DTU；
Preferably, described Internet of Things remote monitoring terminal is local computing or long-range high in the clouds computer；
The present invention, based on control method in heat pump and cleaning machine centralized control system for the PLC, when using, scene is passed through
Modbus bus protocol reads each meter parameter, is then transmit to PLC module, finally by the transmission of industrial remote communication module
To host computer, by heat pump robot control system(RCS) test and appraisal runnability, monitor each equipment running status, collecting temperature changes, fault report
The data such as alert real-time form, finally all data again remote monitoring computer is sent to by internet, realize remotely control with
The function of monitoring, have many sets based on PLC in heat pump and cleaning machine centralized control system when, can respectively will many set systems
PLC module is sent to cloud server, remote monitoring meter by network after being connected to native industry remote communication module again
Calculation machine passes through Network Capture data message again.
Claims (8)
1. the control method in heat pump and cleaning machine centralized control system based on PLC, described centralized control system includes heat pump
System, automatic control system and cleaning machine（11）；Described heat pump includes two groups of source pump, pond（7）, and small pump
（8）；Described two groups of source pump are first group of source pump（9）With second group of source pump（10）；Described automatic control system
Including switch（1）And the touch screen being connected with switch（2）, PLC module（3）, described switch is also associated with host computer
（15）；Described cleaning machine（11）It is joined directly together logical, cleaning machine with the hot water outlet in pond（11）Connection with pond hot water outlet
Suction pump is provided with pipeline, in described pond, is additionally provided with the auxiliary heater of hot water heating in independent water feeder（12）,
Described PLC module is by being connected to the photoswitch of counting module（14）, obtain the quantity of cleaning machine cleaning workpiece, send to
Described touch screen；Described PLC module（3）Acid-base concentration meter, described acid-base concentration meter are connected by serial ports（16）With setting
Acidity-basicity sensor at the hot water inlet of pond（17）Connect, acid-base concentration meter obtains the pH value of heat pump hot-water system, and will
Signal transmission is to PLC module；It is characterized in that：Described centralized Control method include temperature-controlled process, liquid level controlling method and
Acid-base value control method, described temperature-controlled process, liquid level controlling method and acid-base value control method are carried out simultaneously,
Temperature-controlled process comprises the following steps：
Step one, temperature set：In touch screen（2）Cleaning machine is set on operation interface（11）The required water temperature range of work；
Step 2, temperature detection：Temperature sensor（6）Water temperature in pond is detected, obtains the reality of heat pump hot-water system
Shi Wendu；
Step 3, signal amplify：Temperature transmitter（601）It is sent to PLC module after temperature detection signal is amplified（3）；
Step 4, temperature compare：PLC module（3）Receive temperature detection signal, with the water temperature setting value needed for cleaning machine work
It is compared；
Step 5, action：When PLC module judges that temperature is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit works simultaneously, and the hot water in pond is heated；When PLC module judges temperature between minimum and maximum setting value
When, PLC module sends signal and controls second group of source pump（10）Quit work, first group of source pump（9）Work on, right
Pond（7）In hot water carry out Heat preservation, simultaneously PLC module send signal control cleaning machine（11）Start working, and simultaneously
Start PLC module（3）Internal counting module counts to the workpiece being cleaned；When PLC module judges that temperature reaches maximum
During setting value, PLC module sends signal and controls two groups of source pump to quit work simultaneously；Temperature sensor（6）All the time to pond
In water temperature detected；
Liquid level controlling method comprises the following steps：
Step one, level set：In touch screen（2）Work required liquid level scope in pond is set on operation interface；
Step 2, Level Detection：Liquid level sensor（5）To pond（7）In liquid level detected, obtain high with the water level in pond
Spend the water level signal being directly proportional；
Step 3, signal amplify：Fluid level transmitter（501）It is sent to PLC module after Level Detection signal is amplified（3）；
Step 4, liquid level compare：PLC module（3）Receive Level Detection signal, with the level set needed for the normal work of pond
Value is compared；
Step 5, action：When PLC module judges that liquid level is less than minimum setting value, PLC module sends signal and controls two groups of heat pumps
Unit and cleaning machine（11）Quit work, with pond（7）The small pump being directly connected to（8）Water-retention is carried out to pond；Work as PLC module
When judging that liquid level is between minimum and maximum setting value, PLC module sends signal and controls two groups of source pump and cleaning machine（11）
Restart work, the small pump being directly connected to pond（8）Water-retention is proceeded to pond；When PLC module judges that liquid level reaches
During to maximum set value, PLC module sends signal and controls small pump to quit work；Liquid level sensor（5）All the time in pond
Liquid level is detected；
Acid-base value control method comprises the following steps：
Step one, acid-base value set：In touch screen（2）Work required acid-base value working range in pond is set on operation interface；
Step 2, acid-base value detection：Acidity-basicity sensor is to pond（7）The acid of the porch of middle source pump and pond junction
Basicity is detected, obtains the acid-base value signal entering the hot water in pond；
Step 3, signal transmission：Acid-base value signal is sent to acid-base concentration meter by acidity-basicity sensor, and acid-base concentration meter will be believed again
Number it is sent to PLC module；
Step 4, acid-base value compare：PLC module（3）Receive acid-base value detection signal, with the soda acid needed for the normal work of pond
Degree signal setting value is compared；
Step 5, action：When PLC module judges that acid-base value is less than minimum setting value or is more than maximum set value, PLC module
Send signal and control two groups of source pump and cleaning machine（11）Quit work, the display lamp on acid-base concentration meter sends alarm signal
Number, and show failure alarm signal on the touchscreen；When PLC module judges that acid-base value is between minimum and maximum setting value,
PLC module sends signal and controls two groups of source pump and cleaning machine（11）Restart work；Acid-base concentration meter is all the time to pond
In acid-base value detected.
2. as claimed in claim 1 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Step 5 cleaning machine in described temperature-controlled process（11）During work, work as PLC module（3）Judge that water temperature is less than
During setting value, send signal and control cleaning machine to quit work, start the auxiliary heater in pond（12）To pond（7）In heat
Water is heated；When PLC module judges that heat pump breaks down, send signal and control cleaning machine（11）With two groups of heat pump machines
Group quits work, and shows failure alarm signal on the touchscreen, starts the auxiliary heater in pond simultaneously（12）To pond
（7）In hot water heated；When PLC module judges that temperature is between minimum and maximum setting value, PLC module sends letter
Number control cleaning machine（11）Restart work.
3. as claimed in claim 1 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Step 5 cleaning machine in described temperature-controlled process（11）During work, it is arranged on the photoelectricity of cleaning machine porch
Switch obtains the quantity of cleaning machine cleaning workpiece, and transmits a signal to PLC module（3）And touch screen（2）, when PLC module exists
Do not receive the signal of photoswitch transmission in certain time, send control signal and control heat pump and cleaning machine to stop work
Make；Described certain time can directly be arranged on touch screen operation interface, and touch screen transmits a signal to PLC module again.
4. as claimed in claim 1 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：In described temperature-controlled process, step one is in touch screen（2）The cleaning machine setting in operation interface（11）Water temperature needed for work
Scope is 50-90 degree Celsius.
5. as claimed in claim 1 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Described cleaning motor spindle is provided with a cistern, and described cistern is connected with pond, and the hot water in cistern is through thing
Pond is reentered after reason sedimentation and physical filtering.
6. as claimed in claim 1 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Described centralized Control method also includes Internet of Things long-range control method, and described Internet of Things long-range control method includes following step
Suddenly：
Step one：Ready SIM is encased in industrial remote communication module, then will be electric in industrial remote communication module；
Step 2：The GPRS modem of industrial remote communication module is connected with PLC module by RS232 serial ports；
Step 3：The GPRS modem of Internet of Things remote monitoring terminal and industrial remote communication module pass through GPRS network with
And internet communication connects.
7. as claimed in claim 6 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Described industry remote communication module is H7710 technical grade GPRS/CDMA DTU.
8. as claimed in claim 6 based on PLC the control method in heat pump and cleaning machine centralized control system, its feature exists
In：Described Internet of Things remote monitoring terminal is local computing or long-range high in the clouds computer.
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